A Core Outcome Set for inflammatory bowel diseases: development and recommendations for implementation in clinical practice through an international multi-stakeholder consensus process.

BACKGROUND AND AIMS: Standardising health outcome measurements supports delivery of care, enables data-driven learning systems, and secondary data use for research. As part of the Health Outcomes Observatory initiative and building on existing knowledge, a core outcome set (COS) for inflammatory bowel diseases (IBD) was defined through an international modified Delphi method. METHODS: Stakeholders rated 90 variables on a 9-point importance scale twice, allowing score modification based on feedback displayed per stakeholder group. Two consecutive consensus meetings were held to discuss results and formulate recommendations for measurement in clinical practice. Variables scoring 7 or higher by ≥80% of the participants, or based on consensus meeting agreement, were included in the final set. RESULTS: In total, 136 stakeholders (45 IBD patients (advocates), 74 healthcare professionals/researchers, 13 industry representatives and 4 regulators), from 20 different countries participated. The final set includes 18 case-mix variables, 3 biomarkers (haemoglobin to detect anaemia, C-reactive protein and faecal calprotectin to detect inflammation) for completeness and 28 outcomes (including 16 patient-reported outcomes (PROs) and 1 patient-reported experience). The PRO-2 and IBD-Control questionnaires were recommended to collect disease-specific PROs at every contact with an IBD practitioner, and the Subjective Health Experience model questionnaire, PROMIS Global Health and Self-Efficacy short form to collect generic PROs annually. CONCLUSIONS: A COS for IBD, including a recommendation for use in clinical practice, was defined. Implementation of this set will start in Vienna, Berlin, Barcelona, Leuven and Rotterdam, empowering patients to better manage their care. Additional centres will follow worldwide.

Misexpression screen in Drosophila melanogaster aiming to reveal novel factors involved in formation of body parts.

To identify novel factors that lead a fly imaginal disc to adopt its developmental fate, we carried out a modular dominant misexpression screen in imaginal discs. We have identified two factors that appear to change the fate of the respective body structure and appear to lead to the transformation of a body part. In one mutant line, notum tissue, normally derived from wing imaginal tissue, formed close to the site of the sternopleural bristles, which are leg disc derivatives. In the other line, the arista is transformed into a tubular structure, resembling an abnormal leg. We found that ectopic expression of abrupt was responsible for this potential transformation of the arista.